59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
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/* Header file for misc range functions. -*- C++ -*-
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Copyright (C) 2017-2023 Free Software Foundation, Inc.
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Contributed by Aldy Hernandez <aldyh@redhat.com>.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_RANGE_H
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#define GCC_RANGE_H
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value_range range_zero (tree type);
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value_range range_nonzero (tree type);
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value_range range_positives (tree type);
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value_range range_negatives (tree type);
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// Return an irange instance that is a boolean TRUE.
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inline int_range<1>
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range_true (tree type)
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{
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unsigned prec = TYPE_PRECISION (type);
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return int_range<2> (type, wi::one (prec), wi::one (prec));
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}
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// Return an irange instance that is a boolean FALSE.
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inline int_range<1>
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range_false (tree type)
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{
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unsigned prec = TYPE_PRECISION (type);
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return int_range<2> (type, wi::zero (prec), wi::zero (prec));
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}
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// Return an irange that covers both true and false.
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inline int_range<1>
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range_true_and_false (tree type)
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{
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unsigned prec = TYPE_PRECISION (type);
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if (prec == 1)
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return int_range<2> (type);
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return int_range<2> (type, wi::zero (prec), wi::one (prec));
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}
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#endif // GCC_RANGE_H
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